如何将接收字节数组作为base64转换为字符串并写入Jmeter中的文件 [英] How to convert receiving bytes array as base64 to string and write to file in Jmeter

问题描述

{"结果":{"成功":真，" ERRMSG":"误差"}，"字节":" PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4NCjxCdXNpbmVzc1J1bGUgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSIgeG1sbnM6eHNkPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYSI + DQogICAgPEN"}

{"result":{"success":true,"errMsg":"error"},"bytes":"PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4NCjxCdXNpbmVzc1J1bGUgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSIgeG1sbnM6eHNkPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYSI+DQogICAgPEN"}

我收到如上所述的响应，我需要将字节转换为字符串并使用Jmeter写入文件，这怎么可能，我能够使用JSON提取器提取值来写入文件并写入文件

I am receiving a response like above, I need to convert the bytes to a string and write to file using Jmeter , How is this possible, I am able to write to file using extracting the value using JSON extractor and write to file

receivedbytes =  vars.get("recvBytes");
log.info(receivedbytes);
FileWriter fstream = new FileWriter("C:\\tmp\\getSoftwarePackage.out", true);
BufferedWriter out = new BufferedWriter(fstream);
out.write(receivedbytes);
out.close();
fstream.close();

其中recvBytes是响应的字节

where recvBytes is bytes in response

推荐答案

1. 从JMeter 3.1开始，您应该使用JSR223测试元素和Groovy语言，而不是Beanshell
2. 您收到的不是字节数组，而是 Base64 字符串
3. 如果您要使用多个线程编写同一文件，则会遇到种族条件导致数据丢失

1. Since JMeter 3.1 you should be using JSR223 Test Elements and Groovy language, not Beanshell
2. You're receiving not bytes array but a Base64 String
3. If you will be writing the same file with multiple threads you will run into a race condition resulting in data loss

假设以上所有条件

1. 修改您的代码，使其如下所示:

1. Amend your code to look like as follows:

vars.put('decodedBytes', new String(vars.get('recvBytes').decodeBase64()))

将下一行添加到 user.properties文件:

sample_variables=decodedBytes

使用灵活文件编写器将变量写入文件

Use Flexible File Writer to write the variable into the file

如果您不害怕"竞赛条件或使用JMeter进行功能测试(以1个虚拟用户运行它)，您可以修改代码，如下所示:

If you don't "afraid" of the race condition or using JMeter for functional testing running it with 1 virtual user you can amend the code as follows:

new File('C:\\tmp\\getSoftwarePackage.out').text = new String(vars.get('recvBytes').decodeBase64())

这篇关于如何将接收字节数组作为base64转换为字符串并写入Jmeter中的文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！